• plastic
• Essential oil empty bottle--the roll balls are made of materials, which are and hard to wear,essential roller bottles
• Empty roller bottles--it has a small size, portable and compact to carry, which makes it for travel and outdoor use,perfume bottle
• Empty roller bottle--convenient and lightweight to carry a whole bottle of perfume when you are traveling,roller-on bottles
• Essential oil bottle--can be carried with you, convenient to use, compact in size, both suitable for travel use and home use,small roller bottles
• Roller bottles for essential oils--the essential oil bottles will be lightweight, will not take up much space, a travel helper for you,essential oil roller bottles